title: Protecting the ozone layer.
authors.forename: D G
authors.initials: DG
authors.lastname: Simons
authors.forename: J G
authors.initials: JG
authors.lastname: Travell
authors.forename: L S
authors.initials: LS
authors.lastname: Simons
mesh_terms: D000336:Aerosols; D000397:Air Pollution / Q000517:prevention & control*; D005617:Chlorofluorocarbons, Methane / Q000008:administration & dosage*; D005018:Ethyl Chloride / Q000008:administration & dosage*; D006801:Humans; D009209:Myofascial Pain Syndromes / Q000534:rehabilitation*
chemical_list: D000336:Aerosols; D005617:Chlorofluorocarbons, Methane; C013534:fluori-methane; D005018:Ethyl Chloride